3-(1-hydroxy-1-methylethyl)-isochromen-1-one

• 分子结构分类: 有机化合物 - 苯丙烷和聚酮 - 异香豆素及其衍生物
• 英文名称: 3-(1-hydroxy-1-methylethyl)-isochromen-1-one
• 英文别名: 3-(2-hydroxypropan-2-yl)-1H-isochromen-1-one；3-(1-Hydroxy-1-methyl-ethyl)-isochromen-1-one；3-(2-hydroxypropan-2-yl)isochromen-1-one
• 化学式: C₁₂H₁₂O₃
• 分子量: 204.225
• InChiKey: ZXHKQPWKPGYUNR-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  1.6
• 重原子数：
  15
• 可旋转键数：
  1
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.25
• 拓扑面积：
  46.5
• 氢给体数：
  1
• 氢受体数：
  3

反应信息

• 作为产物：
  描述：

  2-(3-hydroxy-3-methylbut-1-yn-1-yl)benzaldehyde 在 silver trifluoromethanesulfonate 、 2-碘酰基苯甲酸 作用下， 以 四氢呋喃 、 乙酸乙酯 、 甲苯 为溶剂， 反应 6.0h， 生成 3-(1-hydroxy-1-methylethyl)-isochromen-1-one
  参考文献：
  名称：

  通过逆Favorskii样降解将2-（炔基）炔基苯向异香豆素的异常转化。

  摘要：

  我们报告了2-（炔基）炔基苯在AgI催化下选择性形成异香豆素的反常反应的发现。就反应机理和形成的产物而言，对于2-（炔基）炔基苯，该反应以前没有记载。水（H2 O18）标记研究表明，可能的机理途径是，首先形成吡咯鎓离子，然后进行水合脱羰基化反应，即水掺入和炔烃排出，这与法维斯基逆反应相似。

  DOI：

  10.1002/asia.201900745

文献信息

• Synthesis of phthalides through palladium-catalysed heteroannulation of acetylenic compounds
  作者：Nitya G. Kundu、Manojit Pal

  DOI：10.1039/c39930000086

  日期：——

  The reaction of o-iodobenzoic acid with various acetylenic compounds in the presence of a palladium catalyst leads to phthalides [1-(3H)isobenzofuran-3-ones] as major products and isocoumarins as minor products.

  邻碘苯甲酸与各种乙炔化合物在钯催化剂的存在下反应，主要生成酞烯 [1-(3H)异苯并呋喃-3-酮]，少量生成异香豆素。
• Palladium-catalysed heteroannulation with terminal alkynes: synthesis of phthalides 1
  作者：Nitya G. Kundu、Manojit Pal、Bidisha Nandi

  DOI：10.1039/a705450e

  日期：——

  The palladium–copper-catalysed heteroannulation of o-iodobenzoic acid 3 with terminal alkynes 4–18 leads to the synthesis of (Z)-3-alkylidenephthalides 19–33 as the major products. In certain cases, the formation of isocoumarins 34–37 is also observed.

  钯-铜催化的o-碘苯甲酸3与末端炔烃4-18的杂环化反应主要合成得到(Z)-3-烷亚基苯并呋喃19-33。在某些情况下，也会观察到异香豆素34-37的形成。
• Synthesis of Isocoumarins from o-Iodobenzoic Acid and Terminal Acetylenes Mediated by Palladium Complexes and Zinc Chloride
  作者：Hong-Yueh Liao、Chien-Hong Cheng

  DOI：10.1021/jo00117a023

  日期：1995.6

  o-Iodobenzoic acid (1) reacts with various terminal acetylenes (HC=CR) in the presence of Pd(PPh(3))(4), Et(3)N, and ZnCl2 in DMF to give the corresponding 3-substituted isocoumarins (C6H4COOC(R)CH: R = n-C4H9 (2a); n-C3H7 (3a); CH2OCH3 (4a); C(CH3)(2)OH (5a); CH2OH (6a); C6H5 (7a);p-CH3C6H4 (8a); 1-cyclohexenyl (9a); o-NH2C6H4 (10a)) in fair to excellent yields, In some of these catalytic reactions, substituted isocoumarin b (C6H4COOC(R)C(C=CR)) and alkylidenephthalide c were isolated in a few percent yields, Under similar conditions, treatment of 1 with a trimethylsilyl 1,3-diyne 12 led to the formation of products 3-(2-indolyl)isocoumarin (13) and an indolylphthalide 14 in a 95:5 ratio. The reaction of o-1-pentynylbenzoic acid with ZnCl2 and Et(3)N gave 3a as the sole product indicating that ZnCl2 is likely responsible for the selective formation of the six-membered isocoumarin ring, Based on this observation and the known palladium chemistry, a mechanism involving the participation of palladium complexes in the alkynylation of 1 and zinc chloride in the heteroannulation of the reaction intermediate o-1-alkynylbenzoate is proposed for the present catalytic reactions.
• Synthesis of Isocoumarins via Pd/C-Mediated Reactions of <i>o</i>-Iodobenzoic Acid with Terminal Alkynes
  作者：Venkataraman Subramanian、Venkateswara Rao Batchu、Deepak Barange、Manojit Pal

  DOI：10.1021/jo050440e

  日期：2005.6.1

  The coupling reaction of o-iodobenzoic acid with terminal alkynes by using a catalyst system of 10% Pd/C-Et3N-CuI-PPh3 has been studied in a variety of solvents. 3-Substituted isocoumarins were formed in good yields and with good regioselectivity when the reaction was performed in EtOH.